使用Flash开发iOS应用实战指南

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"Flash iOS Apps Cookbook 是一本关于使用Flash和Adobe AIR开发iOS应用的实践指南，作者基于其在AIR for iOS领域的早期经验，特别强调基础知识，旨在帮助新手克服难点。书中也涵盖了高级主题，如利用设备传感器和硬件加速优化图形性能。" 在《Flash iOS Apps Cookbook》这本书中，读者将深入学习如何利用Flash技术来开发适用于苹果iOS设备的应用程序。作者Christopher Caleb Birmingham-Mumba通过100个实用的食谱（即具体案例）来引导读者逐步掌握这一过程。这本书不仅适合初学者，对已经熟悉基础的开发者来说，也有大量可以学习的新知识。首先，对于初学者，书中的"基础"部分将帮助他们理解如何设置开发环境，安装Adobe AIR SDK，以及如何创建第一个iOS项目。这部分还会介绍ActionScript 3.0的基础知识，这是编写Flash应用程序的核心语言。此外，读者还将学习如何使用Flash Professional或Flash Builder等工具进行界面设计和代码编写。对于有经验的开发者，书中将详细介绍如何充分利用iOS设备的功能。例如，如何与设备的摄像头、GPS、加速度计和陀螺仪等传感器进行交互，以实现更丰富的用户体验。此外，还会有章节讲解如何利用硬件加速提升图形渲染性能，这对于游戏开发和其他视觉密集型应用至关重要。书中还可能涵盖性能优化技巧，如内存管理、代码优化以及如何减少应用程序的启动时间和响应时间。对于部署和发布，作者会指导读者如何配置应用的元数据，创建App Store提交所需的图标和截图，以及处理应用的版本控制和更新策略。此外，可能会讨论到错误处理和调试，这对于任何开发者来说都是必不可少的技能。通过实际示例，读者将学会如何定位和修复代码中的问题，以及如何使用Adobe AIR的调试工具进行有效的故障排除。《Flash iOS Apps Cookbook》是一本全面的教程，旨在帮助开发者充分利用Flash和Adobe AIR的潜力，创造出能在iOS平台上运行流畅、功能丰富的应用程序。无论是新手还是经验丰富的开发者，都能从中受益，提升自己的技能水平。

Preface

The iPhone is revolutionary. Every day, it seems, someone nds an innovative use for it

and, in the App Store, the perfect outlet for their work. Its success has made apps cool and

helped shift delivery of content away from the browser. Adobe has reacted to this change

by repositioning the Flash platform, and providing the tools required for the creation and

publication of native iOS applications directly from Flash Professional.

The Flash iOS Apps Cookbook is a culmination of my experience working with AIR for iOS

since its beginnings. I have paid particular attention to the fundamentals, focusing on the

groundwork that many newcomers nd daunting. For those with a rm grasp of the basics,

there is plenty to learn, from working with the device's many sensors, to maximizing the

performance of graphics using hardware acceleration.

By the end of this book, you will have acquired the necessary skills to write and distribute your

own native iOS applications using Flash. I hope that you will use what you have learned here

to create beautiful applications that bet the talented and inspiring community you are about

to become a part of.

What this book covers

Chapter 1, Getting Started with iOS App Development, leads you through the often

intimidating process of becoming a registered iOS developer. By the end of the chapter you

will have the necessary les required to publish native iOS apps from Flash Professional.

Chapter 2, Building iOS Apps Using Flash, covers everything required to congure Flash

Professional and publish native iOS apps from it. You will also learn how to install apps on an

iPhone for testing.

Chapter 3, Writing your First App, takes you through the steps necessary to build and test your

very rst iOS app using Flash Professional with a modest amount of ActionScript. Some best

practices for development will also be explored.

Preface

Chapter 4, Porting Flash Projects to iOS, will get you started on the right foot when converting

Flash projects from the desktop to iOS. You will learn how to work within mobile constraints

and how to avoid common pitfalls that can often cripple an app's performance.

Chapter 5, Multi-touch and Gesture Support, will show you how to take full advantage of the

touch-screen. You will learn how to detect multiple touch points and respond to swipe, pan,

and pinch gestures with ActionScript.

Chapter 6, Graphics and Hardware Acceleration, provides invaluable recipes for an area

that often causes frustration. We will cover powerful techniques for dramatically boosting

your application's frame rate and learn the intricacies of Flash's rendering pipeline. With this

knowledge, you will be able to push the graphics performance of your own creations to the limit!

Chapter 7, Working with Text and the Virtual Keyboard, will help you adjust to life without

physical keys by exploring support for iOS's virtual keyboard and native text-input controls.

Time will also be spent covering relevant features of Flash's own text engine.

Chapter 8, Screen Resolution and Orientation Changes, details how to render content on any

iOS device regardless of its screen resolution or physical orientation. Support for the high

resolution Retina display can also be found, along with instructions detailing how to set up a

universal app that can target iPhone, iPad, and iPod touch.

Chapter 9, Geolocation and Accelerometer APIs, covers recipes that utilize both the device's

GPS sensor and its accelerometer. Learn how to make location-aware apps, respond to

changes in physical orientation and detect vibration.

Chapter 10, Camera and Microphone Support, will help you master two of the most popular

sensors built into iOS devices. With the camera, you will learn how to shoot video, capture

photos, and access the image library. This chapter will conclude by covering how to record and

play back audio captured with the microphone.

Chapter 11, Rendering Web Pages, focuses on the presentation of web content—both directly

within your app and by launching Safari. It also covers how to dynamically generate HTML,

navigate the browsing history, and capture a snapshot of the current page.

Chapter 12, Working with Video and Audio, explores the many A/V options available

when targeting iOS. In addition to utilizing Flash's popular FLV video format, this chapter

will detail how to take advantage of hardware-accelerated H.264 video for best quality

high-denition playback.

Preface

Chapter 13, Connectivity, Persistence, and URI Schemes, ties up some loose ends, beginning

with Internet connectivity. Next, le system access is discussed—a topic touched upon by a

number of recipes throughout the book. At the end of the chapter, space is given over to

the use of URI schemes to launch various system apps including Mail, YouTube, App Store,

and Maps.

Chapter 14, Using Native Extensions and ADT, details how to use the command line to take

advantage of AIR for iOS features that aren't currently provided from Flash Professional

directly. Specically, you will learn how to use native extensions to access iOS-specic APIs

missing from the AIR SDK. This chapter is not present in the book but is available as a free

download at the following link:

http://www.packtpub.com/sites/default/files/

downloads/1383_Chapter14.pdf

Chapter 15, ActionScript Optimization, covers a range of invaluable optimizations that

can be applied to your project's ActionScript. You will see how even the simplest of

changes can improve your application's execution speed or improve its memory usage.

This chapter is not present in the book but is available as a free download at the following

link: http://www.packtpub.com/sites/default/files/downloads/1383_

Chapter15.pdf

Appendix A, Flash Professional CS5.5 Specic Recipes, contains a list of the recipes

throughout this book that require Flash Professional CS5.5 and AIR 2.6 or above.

The appendix is not present in the book but is available as a free download at the

following link: http://www.packtpub.com/sites/default/files/downloads/1383_

AppendixA.pdf

Appendix B, ActionScript Optimization Measurements, provides the results from various

optimizations detailed in Chapter 15. This appendix is not present in the book but is available

as a free download at the following link: http://www.packtpub.com/sites/default/

files/downloads/1383_AppendixB.pdf

What you need for this book

This book has been written for users of Adobe Flash Professional CS5 or CS5.5.

The majority of recipes covered are compatible with both CS5 and CS5.5. However, some are

specic to CS5.5 and require the latest version of the Adobe AIR SDK.

You will also need an iPhone, iPad, or iPod touch. Flash Professional CS5.5 supports the

development of applications for iOS 4 or above, whereas CS5 also provides support for older

devices running iOS 3.

You can build native iOS apps using either Flash Professional for Mac OS X or

Microsoft Windows.

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